Garraghan, G. J. (1934). Chapters in frontier history: Research studies in the making of the West. The Bruce Pub. Co..
Lua i Stíl Chicago (17ú heag.)Garraghan, Gilbert J. Chapters in Frontier History: Research Studies in the Making of the West. Milwaukee: The Bruce Pub. Co., 1934.
Lua MLA (8ú heag.)Garraghan, Gilbert J. Chapters in Frontier History: Research Studies in the Making of the West. The Bruce Pub. Co., 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.